Repressed and Active Chromatin Isolated from Interphase Lymphocytes Frenster, John H. ; Allfrey, Vincent G. ; Mirsky, Alfred E. Abstract Publication: Proceedings of the National Academy of Science Pub Date: December 1963 DOI: 10.1073/pnas.50.6.1026 Bibcode: 1963PNAS...50.1026F